Income Taxes (Income Tax Expense From Continuing Operations) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current
Federal	$ 34.6	$ 21.2	$ 76.0
State and local	5.3	4.9	3.8
Foreign	48.7	55.6	43.2
Current income tax expense	88.6	81.7	123.0
Deferred
Federal	7.5	8.8	5.8
State and local	0.6	(12.0)	(2.6)
Foreign	(0.5)	(0.2)	12.2
Deferred income tax expense	7.6	(3.4)	15.4
Income tax expense	$ 96.2	$ 78.3	$ 138.4